On the improvement of tandem solar cell conversion efficiency

M.A. El-Kosheiry and A.H.M. Shousha

Renewable Energy, 1992, vol. 2, issue 1, 41-46

Abstract: The main objective of this paper is to investigate how the physical and structural parameters of the tandem series-connected solar cell structure can be chosen to yield higher conversion efficiencies. A quick suboptimal tandem cell design method based on the criterion of photocurrent matching in the individual cells forming the tandem structure is presented. In this method, the algorithm does not involve detailed calculations in order to obtain a suboptimal tandem cell design. In this respect, the method offers a significant speed advantage compared to the previous tandem cell efficiency calculations. To further enhance the tandem cell efficiency, a constrained optimization program is developed and merged with the tandem solar cell model. Here, the values of all the relevant parameters are allowed to change simultaneously within the limits dictated by the cell's physics and fabrication technology. The resulting boost in efficiency is assessed by comparison with the common suboptimal design based on tandem cell modelling alone, and is shown to be significant in the cases considered.

Date: 1992
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:2:y:1992:i:1:p:41-46

DOI: 10.1016/0960-1481(92)90058-B

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